Speed-changing mechanism.



No. 848.494. EATENTED MAE. 26, 1907. L. RENAULT. SPEED CHANGING MEGEANISM.

APPLIGATION FILED APR.28. 1904.

2 SHEETS-SHEET 1.

PATENTED MAR. 26, 1907.

L. RENAULT. SPEED CHANGING MEGHANISM.

2 SHEETS-SHEET 2.

APPLICATION FILED APR.28. 1904.

UNITED srATns vPAfrnNfr ricerca.

LOUIS RENAULT, OF BlLLANCOURT, iadb-MYOB'y i SPEED-CHANGING mEi-iANisM.

To afi/Z- whom it may concern:

Be it known'that I, LoUrs RENAULT, engineer, a citizen of the French Republic, residing at Billancourt, Department of Seine, France, have invented certain new and useful Improvements in Speed-Changing Mechanism, of which the following is a specication.

This invention has for its object a driving and speed-changing mechanism for motorvehicles, in which the driving-shaft may be connected with the shaft to be driven either electrically or mechanically.

According to this invention the drivingshaft` is electrically connected to the driven shaft for the reduced speeds; but for the greatest speed the electrical transmission is supplied with a mechanical one.

In the accompanying drawings, Figure 1 shows a mechanism according to this invention. Fig. 2 is a modication.

On the Fig. 1, 1 is the motor, 2 the ii'xed inductor of an electric dynamo, 3 its armature 'fixed on the shaft of the motor. The said armature 3 acts equally as a {1y-wheel for the motor 1. 4 is the iixed inductor of an electric motor, the shaft 6 ofwhich is an extension of the shaft of the motor 1. The inductors 2 and 4 are fixed to the frame of the carriage.` .The armature 5 of the electric motor turns loosely on the shaft 6. The socket carrying the armature 5 passes freely through the inductor 4 and is connected by means of a swivel-joint 7 to the shaft 8 to be driven. This shaft is in gear in a convenient manner with the driven wheels 9 of the vehicle. Between the armature 3 of the dynamo and the armature 5 of the motor a clutch 10 is provided allown the armatures 3 and 5 being coupled toget er. If the armatures 3 and 5 are coupled together, the motive power is transmitted mechanically to the wheels, the electric'transmission bein dispensed with. The clutch 10 (shown on FigJ 1) is a frictionclutch in which the cone bears against the conical `cup-shaped member by means of la spring 11. The cone and conical cup-.shaped member are put into ear or thrown out of gear by means of the ever 12, allowing the armature to be moved along its axis. When the cone and conical cup-shaped member-of the clutch 10 are thrown out of gear, the Inotor 1 is started.

The dynamo constituted by the inductor Patented March 28, 1907.

1904. Serial No. 205,419.

y tric motor constituted by the inductor 4 and the armature 5. The motor being set into rotation causes the shaft 8, and consequently the driven wheels of the vehicle, to be rotated. By varying the intensity of the current sent in the motor by means of the said controller the s eed may be varied without 4a break. The E versing the poles. I In the mechanism shown in Fig. 1 the coupling is obtained ,by a friction-clutch and a lever 12. Y

The speed is varied. by only acting on a controller 27, like those used in the electric tramways or vehicles, and thegreatest speed is obtained by breaking the current between the dynamo and the motor. Fi 2 shows a modiiication in which 13 is a litt e dynamo rotated by the motor 1 and sending the electric exciting-current in the inductor 14 of a second dynamo, iixed on the shaft of the motor. The current is given to 'this inductor by two brushes 15 and 16, connected to the dynamo 13. 1n the inductor 14 isrotatively mounted the armature 17 of the-dynamo. The said armature 117 carries the cone 18 of a friction-clutch, the conical cup-shaped member 19 of which being ixed to the inductor 14. A spring 20 causes the cone 18 to bear against the conical cupsha ed member 19. A lever 21 allows the shaft 22, on which is ixed the armature 17, to be' moved longitudinally', and thus the clutch to be put into gear or thrown out of gear. y The current produced by the dynamo constituted by the armature 17 and the inductor 14 is sent to an electric motor 23, the inductor of which isfixed to the frame of the vehicle. The armature 24 ofthe motor 23 is Xed on the shaft 22, whichis connected, by means of a swivel-joint and shaft 25, to the driven Wheels-26 of the vehicle. The mechanism works as follows: The vehicle being stopped and the motor 1 being put into rotation, the motor 1 causes the "dynamo 13 and remains stationary. The rotation of the inductor 14 around the armature 17 produces a current whic may be sent throul h a controller to the electric motor 23. he'armature 24 of the motor 23 is thus caused to rotate, and with it the armature 17, the shaft 22, and consequently the drivenfwheels 26. A part of the power being taken up by the electric motor, the armature 17 tends to be ackward running is obtained by re-l brought into rotation by the inductor 14. In

IOO

the inductor k14 to rotate. The armature 17 i IIO this,meehnnim the ntrnnttures 17 und 24, lixed on the sha1 t 22,:1et simultnneouSlyfor 1 Causing the sha1 ft 35 oi the vehiele to rotate. The lneehzinislns hereinbei'ore deseribed E ma)v be used wit h :dternnting-Current motors 1' or with direet-eurrent 111otor y 11nd muy be :1p- 1' plied to other nnxehines than motor-vehieles, for inStztnee. to machine-tools. j' IIatving thus deseribed 1nd ziseertaiined the 1 mtture of my invention und in whzit 11111111101' the sume may be performed7 I deeiare that what I elatim is 1,. A driving :1nd speed-elnmging met-1111.11- ism for motor-vehicles comprising n motor :11nd ithl shaft, at dynanno endhlying :1 stziy tionzny induetor and :1.11 nrnmture fixed to 5 :11nd rotating with the shaft of the motor, snid i ztrnlature constituting :i ily-wheel for the 1' motor-shaft', :t driven Shaft provided with :1 i Socket in whieh extends the motor-shaft, :1n i t eleetrie mot-or embodying :t ixed induetor i und an armature mounted on the driven; sihftft.I aiietion-eluteh embodying two members, one of whieh is 'fixed to the arnmtureol" the dynamo and the other of which is iixed to t the armature of the motor, and means for i moving the members of the eluteh into :1nd out of engagement.

2. A driving and speed-ehnnging mechanism for 1noter-vehicleeomprising n motor und its shaft, a dynmno e111hodying n slutionnrjY induetor und in arnniture iixed to :1nd rotating with the shaft of t he motor, said armature eonstitnting a iy\\'i1eel for the motor-shaft, 11 driven shaft provided with i1 soeket in which extends the motor-shaftl :in eleetrie motor embodying a xed induetor and :1n armature mounted on the driven shaft, :t frietion-eluteh e111 bodving two members, one of which is fixed to the armature of the dynamo and the other of which is fixed to the armature of the motor, means for moving` the members ofthe eluteh into :1nd out of engagement, and means for fixing the induetors to the frame ot the vehicle.V

1n testimon)v whereof I have hereunto Set my hand in presenee of two' ASubscribing witnesses.

LOUIS RENAULT.

Witnesses:

PAUL F. PAQUET, PIERRE LEINE. 

